package com.haojin.java2;

public class StudentTest {

	public static void main(String[] args) {
		try {
			Student s = new Student();
			s.regist(-1001);
			System.out.println(s);
		} catch (Exception e) {
			System.out.println(e.getMessage());
		}
	}
}
class Student{
	private int id;
	
	
	
	@Override
	public String toString() {
		return "Student [id=" + id + "]";
	}



	public void regist(int id) throws Exception{
		if(id > 0){
			this.id = id;
		}else{
//			System.out.println("您输入的数据非法！");
			//手动抛出异常
//			throw new RuntimeException("输入的数据方法！！");
			throw new MyException("不能输入负数！！");
		}
	}
}